Year Per 100 People 1960 0 1965 0 1970 0 1975 0 1976 0 1977 0 1978 0 1979 0 1980 0 1981 0 1982 0 1983 0 1984 0 1985 0 1986 0 1987 0 1988 0 1989 0 1990 0 1991 0 1992 0.02787 1993 0.11633 1994 0.2438 1995 0.36828 1996 0.61042 1997 0.83164 1998 0.82768 1999 0.74044 2000 9.74721 2001 11.88346 2002 21.57657 2003 22.58788 2004 35.87195 2005 52.50348 2006 62.15114 2007 78.49889 2008 84.61278 2009 91.38152 2010 98.15816 2011 139.66328 2012 145.58876 2013 151.06327 2014 156.35286 2015 146.1813 2016 149.63668 2017 131.50928